Related Clues:

• Mobile, for instance
• Mobile, perhaps
• Time big beast replaced worker with one that is a communicator
• Use this unexpected help, acting in support
• Eg, mobile
• Updike's Poles
• Highly acidic call
• Ring (someone)
• Help teen over struggle to become mobile
• Get in touch, in a way
• Bell's ringing success
• Note help involved single call
• Call for help on collapsing in the stand
• Call out?
• Call for help, on staggering into the stand